李林甫是盛唐时期非常重要的一位宰相,他任相长达十九年~([1]),这在宰相任期普遍在三年左右的玄宗朝是独一无二的~([2])。但是有关李林甫的总体评价,却自他身死之后就一直是偏于负面的。玄宗幸蜀之后,曾与裴士淹商较当时卿相,“及言李林甫,日:‘妒贤嫉能,亦无敌也。’”~([3])代宗时,颜真卿为反对元载,以李林甫为鉴,认为他是“权臣误主”~([4])。德宗亦再三叹言“中原之祸,自林甫始也”~([5])。到宪 Li Linfu was a very important prime minister during the Tang Dynasty. His tenure was 19 years ([1]), which was unique to the Xuanzong Dynasty, where the prime minister had a term of office of about three years. However, the overall evaluation of Li Linfu has been somewhat negative since he died. Emperor Xuanzong Fortunately, after the war with Pei Shi Yan than the then Qing phase, “and the words Li Linfu, day: ’jealous Yin envy, also invincible also. ” ~ ([3] Take Li Linfu as a guide, think he is “power official mistakes ” ~ ([4]). Dezong repeatedly lamented “the calamity of the Central Plains, since the beginning of Lin Fu ” ~ ([5]). To constitution